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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I want to agree with you, but if the description was any more clearer, the answer would become obvious (as this kata is rather easy once the pattern becomes clear).
Some opacity is necessary by design.